Concentrating-table.



4 SHEETS-SHEET 1.

PATENTED APR.' 2,1, 1908.

J. D. KOHLMANN.

GONGBNTRATIN'G TABLE.

APPLIOATIPN IIILED- PEB. 9, 1905.

N. 885,349. PATENTED APR. 21, 1908.- J. D. KOHLMANN. CONCENTRATING TABLE.

APPLICATION FILED IBB. 9, 1905.

4 SHEETS-.SHEET 2.

a J gnou/woz M attenua" PATENTED APR. 21, 1908. J. D. KOHLMANN. CONCENTRATING TABLE.

APPLIoATIoN FILED rms. l1 1935.

JNO. 885,349.

4 SHEETS-SHEET 3.

Mmmm A witwassen No. 885,349. I l PATENTED APR. 21, 1908.

' J. D. KOHLMANN.

GONGENTRATING TABLE.

APPLIoATIoN FILED FEB. 9,'1905.

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@vih/woon lIl VI "M ,62 31A/vento@ att Mg l a horizontal to a tilting position and adapted No. senseo.

.- To all whom 'it may concern:

JOHN D. .'KoHLMANN, or MILWAUKEE, wI-seoNsIN.

.'coNcEN'rRA'rmG-TABLE.

Specification ofLetters Patent.

Patented April 21, 1908'.

Application led February 9,` 1905. Serial No. 244,954.

Be it known that I, J oHN D. KOHLMANN, a

' vcitizen of the UnitedStates, residin at Mil- Waukee, in the county 'of Milwau ee and State of .Wisconsin, have invented certain new and useful Im' rovements in Concentrat- ,ing-Tables, of whic the following is a specification:

' My invention relates to an improvement in concentrating tables, and the ob] ect to provide a table for separating, mechanicall the .various minerals, differing from eachot er in specific gravity, fromthe rock bearing said minerals, the' rock having been previously crushed and reduced toa size best suited for,

the urpose.

foregoing objects in view, my invention consists in a table having either a smooth or riftled surface, resting upon suitable supports, capable of being adjusted from ith the to receive a-.reciprocatoryr motion vfrom the end and side whereby the operator is enabled .to obtain at will, a motion ranging from astraight-Way thrust of variable magnitude in the direction of the length of the table, without side thrust, to a straight-way thrust of variable magnitute at the head end, -at the tail end, aft both head end and tail end or a combination of either, or both, with the motion in the direction of the len th of the table, the various combinations resu ting in motions ranging' in direction from 0 to 90 with the direction of length of table, any given sett-ing producing a motion of fixed angularity.

My invention further consists in certain novel featuresof construction and 4 combinations o parts which will be hereinafter described and` pointed out in the claims.

` In the accompanying drawings, Figure 1 is a plan view, Fig. 2 is' a side elevation,- Fig. 3 is an vend View, Fig. 4 is an enlarged plan view f of the driving gear or head motion, Fig. 5 is a side view of the latter figure on the same scale, and Figs. 6 and 7 are views of two forms of riflies.

chine, and Bis the table resting A, represents the base or bed of the inaurpon supports 1, 1, four or sixin number. he ends -of'these supports are spherical and rest in correspondingly shaped-sockets 2, 2, on the lower surface ofthe' table, and similar sock- I ets 3\,'3, locatedrespectively on th'e'base Aor .be d,and-on a bar 5v on the rear side yot the A machine, thereby permitting any given, point on the table,- to describe a'circle, its surface 'remaining a horizontal or inclined plane.v

The -bar 5 is provided on its lower surface with oppositely inclined blocks 6, 6 with their inclining surfaces inward or toward "each other, and these 4blocks rest upon o positely inclined wedges 7, 7, which are capa e of being simultaneously thrust outward to raise the edge of the table beneath which they are located, or inward to lower it by swinging the hand lever 8 on its pivot 9, it being connected on opposite sides of its pivot'or fulcrum to the wedges by means of connecting rods 10, 10'. or bed prevent endwise movement of the bar 5 by confining the latterbetween them. In this Way, the o erator is enabled to tilt the table more or ess. by actuating the handlever 8 governing the position of the wedges,

the supports 1, 1, two or three in number on the opposite'side of the machine serving as the fulcrum, while this adjustment is made or taking place.

The head motion and driving gear for imparting endwise and lateral motion to the table will now be described.` A main drive shaft 15 is journaled in .boxes 1'6, 16 at the head end of the table, which end by the wayis marked H lto distinguish it from the tail.

end, which is marked T. Fast and loose pulleys are located on one end of the shaft 15, 'and a crank disk 18 on the oppositeend. This crank disk has ,a Wrist-pin 19. A secondary shaft 20 parallel with shaft 15 is 'ournaled'a short distance therefrom at' the ead end of the concentrator, and this secondary shaftis provided with a Weighted or balanced lever 21 at one end.l This lever has on the ,shaft side a planed slot 22 extending Jfrom the points D to E, said slot receivin the wrist in 19, and a sliding block 23 W ich latter ts -and slides in the slot while the Wrist pin turns in it, the block being bored toit the wrist' or crank pin aforesaid. The opposite side of this lever 21 has a bevel-gear or segment 24 cast or fastened thereon concentric with its axis. The opposite end of the shaft 1 has a crank 25 with aT-slot or dove ltail slot 26 formed therein which permits the setting of the crank4 pin 27 at dead center, at the outer periphery or at any intermediate point,

` and .from this crank pin the conneetin rod l28 extends to the table whereby en Wise motion is im arted thereto.

From the oregoing-it will be seen that as the main shaft revolves and when the sliding block 23 and wrist-pin 19 are. in the position Stationary abutment-s 11, 1 1 on the base the cran indicated at E a slow motion is being trans- 'mitted to the table, but when at D a'quick return results.

Running at right angles to the main shaft and parallel to the table is the auxiliary shaft 30, it being journaled in suitable bearings vthe table, .either an eccentric or a lever 35 is secured on .the shaft 30 "which also transmits motion to the table at the head end lin a side direction through the connecting rod 36. A'spring 36 d'mounted on the connecting rod- 36 servesto prevent undue pounding. The three connecting rods 28, 34 and 3 6 transmit the three motions to the table from the two r crank disks and the eccentric or lever, and as y the table such side thrust may be obtained' these cranks make only a part revolution they produce an oscillating effect.

From the foregoing itwill be seen that I provide 'a table sim le in mechanism and producing any and al motionsrequired for mechanical concentration. By suitable adjustment of the crank pin at the tail-end of as to permit of separating minerals having different specific gravities, from each other, such as zinc .blendc from pyrites, etc. WhileJ I may use riffles or. not, the motion resultant from theside thrust obviates the necessity of.

having riflles on the table.

In Figs. 6 and 7 I- have illustrated tableshaving riflies 4Q, 40. 'The ends of these rifiles terminate in points Whichvgo to make up a curve, .as indicated, Which curvemay be.` either a catenary, a parabola or an hyperbola'.

- or even'a c1rcle, 'whichever may glve the bestresults for a given Work. ,The origin of v the curve maybe at the head end or the tail resorted to in the form and arrangementofthe several parts described Without4 departing` sjpiljit and scope of my invention,

do not wish to limit myself to the and hence end of the tableoas illustrated in the two .'vi'ews of the drawings, experiment again determining which is most efficient. Fig.. 6 shows the riHesWith the origin of the curve at thehead end of the table, and Fig. 7`shows'v a set of riffles with the origin at the tail end. It is evident that slight 'changes might be from the,

exact construction'herein set forth, but` Having fully described my invention, what 4 I claim as new and desireto secure by Letters Patent, is

1. A laterally inclined and differentially reciprocating table adapted to discharge concentrates at one end and gangue over the side, in combination with aV driving shaft, a secondary shaft imparting a direct reciprocating motion to the'tablei independent of lateral motion, means for transmitting motion to the secondary shaft, an auxiliary shaft, and an independently adjustable arm connected therewith and with the table for imparting lateral motion to saidA table. C

. 2. combi-nation, a laterally inclined and differentially,reciprocating table adapted todischarge concentrates at one end and gangue over the side, a driving shaft, a secondary shaft imparting a direct reciprocating motion to fthe table independent of lateral motion,

means for transmitting motion to the secondary shaft, an auxiliary shaft, and independently adjustable means connected with the latter and with the. head and tail ends of the table, respectively, for imparting lateral motion.

3. In combination, a laterally inclined and diHerentially reciprocating table adapted to discharge concentrates at one end and gangue over the side, a driving shaft, a seconda-ry..

shaft imparting a direct reciprocating motion to the table independent of lateral motion, means for transmitting motion to the secondary shaft,` an auxiliary shaft, gears on the secondary. and auxiliary shafts, and ind end- "cn'tly adjustable arms vconnected wit auxiliary shaft and with the head and'tail .rendsfrespectively of -the table, for impart- 'lng l'ateral motion'.

4. In combination, a laterally inclined and ldifferentially reciprocating Atable adapted to discharge concentrates at one end and gangue `over the side, la driving shaft, a secondary shaft imparting a dir/ect reciprocating motion to the table inde endent of lateralmo'tion, a balanced slotte shaft enga'ging aO crank disk on the driving shaft, an auxiliary shaft, a gear thereon meshing with a gear n the secondary shaft,` and anv independently adjustable arm connected with theauxiliary shaft and with the table, for imparting lateral motion thereto.

'In testimony whereof I affix my signature in presence vof two Witnesses. 'J v JOHN D. KOHLMANN.lv

Witnesses: y J. S. Bnonnnan, FT. C7. HOLTMAN.

lever on 'the secondary' the 

